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Thousandeyes Enterprise AgentApplication · Cisco

CVE-2024-20277

HIGH · 8.0 CVSS v3.1 Published 2024-01-17
Fix available
A fix is available. Upgrade to 0.233.2 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A vulnerability in the web-based management interface of Cisco ThousandEyes Enterprise Agent, Virtual Appliance installation type, could allow an authenticated, remote attacker to perform a command injection and elevate privileges to root. This vulnerability is due to insufficient validation of user-supplied input for the web interface. An attacker could exploit this vulnerability by sending a crafted HTTP packet to the affected device. A successful exploit could allow the attacker to execute arbitrary commands and elevate privileges to root.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

Authenticated command injection vulnerability in Cisco ThousandEyes Enterprise Agent Virtual Appliance web-based management interface. Insufficient validation of user-supplied input allows remote attackers to inject arbitrary commands and escalate privileges to root.

MitigationApply vendor-provided patches for Cisco ThousandEyes Enterprise Agent. Restrict network access to the management interface and enforce strong authentication credentials.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Thousandeyes Enterprise AgentApplication
Affected:< 0.233.2

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify the installed ThousandEyes Enterprise Agent version
    Access the Virtual Appliance web management interface and navigate to the version information page, typically found under Settings > System > About, or run the command 'te-agent --version' if CLI access is available
    Affected if The displayed version number is less than 0.233.2 (for example, 0.233.1, 0.232.0, etc.)
  2. Confirm the product is ThousandEyes Virtual Appliance
    Verify the device is running Cisco ThousandEyes Enterprise Agent Virtual Appliance by checking the web UI header or login page for ThousandEyes branding, or check the system hostname and service name
    Affected if The product is ThousandEyes Enterprise Agent Virtual Appliance and version is below 0.233.2
  3. Verify the web-based management interface is enabled
    Check if the web management interface (typically on port 443 or 4433) is listening and accessible on the appliance. This can be done by checking open ports with 'netstat -tlnp' or attempting to reach the interface via browser
    Affected if The web-based management interface is enabled and accessible on the network
  4. Check for existing administrator accounts
    Review the list of configured users in the ThousandEyes web interface under Settings > Users and Accounts to determine if weak or default credentials may exist
    Affected if Any user account with administrative privileges exists in the system (the vulnerability requires authenticated access)

The environment is affected if the Cisco ThousandEyes Enterprise Agent Virtual Appliance is running a version lower than 0.233.2 and the web-based management interface is accessible with valid credentials.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 0.233.2 or later
Fixed in 0.233.2
Interim mitigation

Apply vendor-provided patches for Cisco ThousandEyes Enterprise Agent. Restrict network access to the management interface and enforce strong authentication credentials.

Recommended fix High confidence

0.233.2

  1. 1. Identify all ThousandEyes Enterprise Agent Virtual Appliance installations in your environment
  2. 2. Check the current installed version by accessing the appliance management interface or running: te-agent --version
  3. 3. Schedule a maintenance window for the upgrade
  4. 4. Download the ThousandEyes Enterprise Agent version 0.233.2 or later from the Cisco ThousandEyes portal
  5. 5. Follow Cisco's standard upgrade procedure for the Virtual Appliance: access the management interface, navigate to Settings > System > Upgrade, and upload the new image
  6. 6. After upgrade completes, verify the version is 0.233.2 or higher using: te-agent --version
  7. 7. Confirm the web-based management interface is functional and test that authenticated sessions work properly
Caveat Standard enterprise appliance upgrade - review Cisco ThousandEyes release notes for any configuration or behavioral changes before upgrading

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Thousandeyes Enterprise Agent Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing4.0 h
  • Review / QA2.0 h
12.0 hours of engineering $2,080
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,328.

Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-20277 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data